rscreate.c revision 26f3cdf03f1adcc98f6d3d99843ee71e9229a8c0
/*******************************************************************************
*
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2011, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#define __RSCREATE_C__
#include "acpi.h"
#include "accommon.h"
#include "acresrc.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME ("rscreate")
/*******************************************************************************
*
* FUNCTION: AcpiRsCreateResourceList
*
* PARAMETERS: AmlBuffer - Pointer to the resource byte stream
* OutputBuffer - Pointer to the user's buffer
*
* RETURN: Status: AE_OK if okay, else a valid ACPI_STATUS code
* If OutputBuffer is not large enough, OutputBufferLength
* indicates how large OutputBuffer should be, else it
* indicates how may UINT8 elements of OutputBuffer are valid.
*
* DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method
* execution and parses the stream to create a linked list
* of device resources.
*
******************************************************************************/
{
ACPI_SIZE ListSizeNeeded = 0;
void *Resource;
AmlBuffer));
/* Params already validated, so we don't re-validate here */
/*
* Pass the AmlBuffer into a module that can calculate
* the buffer size needed for the linked list
*/
if (ACPI_FAILURE (Status))
{
}
if (ACPI_FAILURE (Status))
{
}
/* Do the conversion */
if (ACPI_FAILURE (Status))
{
}
}
/*******************************************************************************
*
* FUNCTION: AcpiRsCreatePciRoutingTable
*
* PARAMETERS: PackageObject - Pointer to an ACPI_OPERAND_OBJECT
* package
* OutputBuffer - Pointer to the user's buffer
*
* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code.
* If the OutputBuffer is too small, the error will be
* AE_BUFFER_OVERFLOW and OutputBuffer->Length will point
* to the size buffer needed.
*
* DESCRIPTION: Takes the ACPI_OPERAND_OBJECT package and creates a
* linked list of PCI interrupt descriptions
*
* NOTE: It is the caller's responsibility to ensure that the start of the
* output buffer is aligned properly (if necessary).
*
******************************************************************************/
{
/* Params already validated, so we don't re-validate here */
/* Get the required buffer length */
if (ACPI_FAILURE (Status))
{
}
(UINT32) BufferSizeNeeded));
if (ACPI_FAILURE (Status))
{
}
/*
* Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a
* package that in turn contains an UINT64 Address, a UINT8 Pin,
* a Name, and a UINT8 SourceIndex.
*/
{
/*
* Point UserPrt past this current structure
*
* NOTE: On the first iteration, UserPrt->Length will
* be zero because we cleared the return buffer earlier
*/
/*
* Fill in the Length field with the information we have at this point.
* The minus four is to subtract the size of the UINT8 Source[4] member
* because it is added below.
*/
/* Each element of the top-level package must also be a package */
{
"(PRT[%u]) Need sub-package, found %s",
}
/* Each sub-package must be of length 4 */
{
"(PRT[%u]) Need package of length 4, found length %u",
}
/*
* Dereference the sub-package.
* The SubObjectList will now point to an array of the four IRQ
* elements: [Address, Pin, Source, SourceIndex]
*/
/* 1) First subobject: Dereference the PRT.Address */
ObjDesc = SubObjectList[0];
{
}
/* 2) Second subobject: Dereference the PRT.Pin */
{
}
/*
* If the BIOS has erroneously reversed the _PRT SourceName (index 2)
* and the SourceIndex (index 3), fix it. _PRT is important enough to
* workaround this BIOS error. This also provides compatibility with
* other ACPI implementations.
*/
{
"(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed",
Index));
}
/*
* 3) Third subobject: Dereference the PRT.SourceName
* The name may be unresolved (slack mode), so allow a null object
*/
if (ObjDesc)
{
{
{
"(PRT[%u].Source) Need name, found Reference Class 0x%X",
}
/* Use *remaining* length of the buffer as max for pathname */
/* +1 to include null terminator */
break;
case ACPI_TYPE_STRING:
/*
* Add to the Length field the length of the string
* (add 1 for terminator)
*/
break;
case ACPI_TYPE_INTEGER:
/*
* If this is a number, then the Source Name is NULL, since the
* entire buffer was zeroed out, we can leave this alone.
*
* Add to the Length field the length of the UINT32 NULL
*/
break;
default:
}
}
/* Now align the current length */
/* 4) Fourth subobject: Dereference the PRT.SourceIndex */
{
"(PRT[%u].SourceIndex) Need Integer, found %s",
}
/* Point to the next ACPI_OPERAND_OBJECT in the top level package */
}
}
/*******************************************************************************
*
* FUNCTION: AcpiRsCreateAmlResources
*
* PARAMETERS: LinkedListBuffer - Pointer to the resource linked list
* OutputBuffer - Pointer to the user's buffer
*
* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code.
* If the OutputBuffer is too small, the error will be
* AE_BUFFER_OVERFLOW and OutputBuffer->Length will point
* to the size buffer needed.
*
* DESCRIPTION: Takes the linked list of device resources and
* creates a bytestream to be used as input for the
* _SRS control method.
*
******************************************************************************/
{
ACPI_SIZE AmlSizeNeeded = 0;
/*
* Params already validated, so we don't re-validate here
*
* Pass the LinkedListBuffer into a module that calculates
* the buffer size needed for the byte stream.
*/
if (ACPI_FAILURE (Status))
{
}
if (ACPI_FAILURE (Status))
{
}
/* Do the conversion */
if (ACPI_FAILURE (Status))
{
}
}